Air carrier captain reported an engine failure during initial climb. The crew returned to the departure airport for a safe landing.

Narrative

Climbing through 3000 feet on the takeoff out of ZZZ; we heard a bang and had sudden loss of thrust on engine 1. We went straight out; advised ATC; and continued the climb to 5000 feet. We had the engine 1 out EICAS message. I was pilot monitoring but took the airplane right after the engine failed. We turned to the downwind; asked ATC to advise company; and we called the FA (flight attendant) to tell her the situation and that we'd be returning to ZZZ. I asked the FA to make the PA to the passengers. The FA called back after this to advise no smoke but a strange odor was present. The FO and I agreed; it smelled like a mix of oil and fuel; and we made the decision to land ASAP back at ZZZ. In the time from there to landing; we ran the engine 1 out QRH and the single engine approach and landing QRH. We landed and the Fire Department advised that the aircraft appeared normal and no visible exterior damage. We taxied to the gate and deplaned normally.The plane had the SIL (Service Information letter) for engine 1 oil pressure trending high. I would like to have a follow up from safety on how many of our engine failures have been on engines with the same SIL. If I remember correctly; I can think of 6 engine failures since I started at the company nearly 3 years ago. This feels higher than normal but please let me know if this is a normal rate of engine fails. Please also follow up with me about the cause of the engine failure.